Piha - surf spot statistics

Piha, New Zealand, is a powerful, exposed beach break that receives consistent swell year-round, with ground swell dominating over wind swell in all months. The best time to surf here is during the autumn and winter months (March to August), when swell energy is strong and consistent, with mean swell sizes peaking around 2.1m from May to October. However, wind conditions are generally less favorable during this period, with bad wind days occurring over 70% of the time, particularly from August to November when unfavorable winds exceed 80%. The shoulder seasons (February to April) offer a slightly better balance, with decent swell size (1.5m to 1.8m) and marginally improved wind conditions—around 30% good wind days in February to March. Summer (December to January) brings smaller swells (1.6m mean) and higher wind swell influence, though ground swell still dominates. While summer has the least frequent bad wind days (around 76% in January), it’s still not ideal due to inconsistent winds and smaller waves. Advanced surfers will prioritize the larger, cleaner swells of autumn and early winter, while intermediates may find late summer and early autumn more manageable despite the still-challenging wind patterns. Overall, March stands out as a strong month with a high percentage of ground swell (91%), manageable mean size (1.7m), and slightly better wind odds (31% good days) compared to deeper winter.

August at Piha offers solid surf conditions, though with some variability. The average swell height of 2.1m and a dominant 13.5s period indicate powerful, well-spaced waves, best suited for experienced surfers. The primary swell direction comes from WSW (22.21% of waves in the 1.5-2m range), delivering consistent, clean lines when combined with lighter winds. However, SW swells also contribute (2.17% in 1.5-2m), occasionally mixing up conditions. Wind is a limiting factor—only 20% of the time is it ideal (typically light offshore ENE-E or variable winds under 20kph). Stronger SW-WSW winds (4.48% at 20-30kph) can create choppy surfaces, particularly when swells are mid-sized. Expect larger sets (over 2.5m) 1.37% of the time from WSW, offering heavier barrels for advanced riders. Mornings often provide the cleanest sessions before afternoon sea breezes. Overall, August delivers punchy, powerful waves but demands patience for optimal wind alignments.